Improvement in mashing-machines



' A; MILLER.

A Mashing-Machin'.

N 0.l|52,248, PatenuedApril20J875.

i. A u' Mmm THE GRAPHIC C0.PHOTG:LITH.39&41 PARK PLAGEJLY.

JOSEPH A. MILLER, OF PROVIDENCE, RHODE ISLAND.

IMPROVEMENT IN MASHING-MACHINES.

Specication forming part of Letters Patent No. 162,248, dated April 20, 1875; application led March 26, 1874.

To all whom it may concern:

Be it known that I, JOSEPH A. MILLER, of Providence, in the State of Rhode Island, have invented a new and useful Improvement in Machinery for Mashing and Washing; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specilication.

The object of my invention is to produce a simple machine which may be attached to a mash-tub, such as is used by brewers, or to a tank for washing tallow or other matter, and which will thoroughly stir, mix, and agitato the contents of such tub or tank, and yet leave the tub or tank free from any kind of machinery.

In the accompanying drawings, Figure I is a sectional view, showing the machine attached to a maslrtub, and Fig. II showing the same' as attached to a washing-tank, Fig. III being a crosssection of the same.

Similar letters of reference indicate corresponding parts.

In the ordinary mash-tub the agitating machinery is placed within the tub, thereby greatly obstructing the same. Such machinery is also complicated in construction and necessarily costly, whereas in my invention the machinery is all outside of the tub, is simple in construction, not liable to get out of order, while the tub may be readily cleaned, and, if required, maybe covered, which is not the case in the older machines.

My improvement consists in placing' under the funnel-shaped bottom of a mash-tub a cross-shaped pipe, B, and within the same a propeller, E. To one of the arms of this pipe the bearing-block for the propeller-shaft is secured, and to the opposite arm the pipe O is fastened, which may form an elbow, and return to the bottom of the tub near its side, or preferably may ascend upward and open into the tub on its side, as is shown in the drawlng.

W hen the tub is filled with water and mash, and mot-ion is imparted to the propeller, the mass in the pipe C is violently forced into the tub, and the mass in the tub ows down the pipe B to the propeller, which thoroughly churns and agitates the same, and the violent discharge from the pipe O, together, keep the whole in continuous agitation; and when the mash has been thoroughly mixed, and all particles have been thoroughly separated, so that all farinaceous matter maybe easily extracted, the whole may be drawn off by the usual valve or gate placed on the bottom arm of the pipe B. The propeller may also be conveniently removed, and the whole may be thoroughly cleaned and inspected.

The same apparatus is convenientlyadapted for mashing and washing minced tallow before the same is placed into the rendering-tank, and in that applica-tion I prefer a tank, as is shown in Figs. II and III, having the partition L and gate K, so as to divide the tank, when required, into two parts, l and 2. Int-o this tank tallow or other matter to be washed is placed. The partition L being raised, and the gate K closed, sufficient water is added, and motion imparted to the propeller, which, producing a violent agitation and peculiar scrubbing action bot-h with its plates and the centrifugal action of the water and matter against the pipe O, forces the whole in continuous iiow up the pipe O and down the pipe B. IVhen, now, the matter has been sufliciently scrubbed and washed, the partition L is lowered, the gate K raised, and the material allowed either to run upon a perforated screen or intoa tub having a perforated false bottom, and, while the screw-propeller is kept in motion, fresh water is run into the division I of the tank and down the pipe B until the whole is discharged. A gate may also be placed on the lower arm ot' the cross-pipe B, and the partition L being partly raised, and a perforated gate placed, instead of the gate K, in front of said gate, so that the dirty water may run ott', and the partition L, acting as a scumplate, will retain most of the dirty mass. IVhen, now, fresh water is allowed to flow into the part I of the tank, and the dirty water allowed to flow off at K, the whole will in a short time be pure and clear, and may then be drawn otf from the gate at the bottom of the pipe B.

The propeller is not intended to tit the pipe, but is to be of a less diameter than the inside ofthe pipe; nor do Iconfne myselfto a threel washing or mashing` tub or tank, in combina plate propeller, but also at times use more tion with the propeller E, revolving Within the than one propeller on the same shaft. pipe B, the other end of said pipe being oon rEhe object of the propeller E is to scrub, nected, bythe pipe G,Witl1 the tub or tank, so mix, and disintegrate the mass subjected to that the contents of the same will be subjected its action, and not merely to act as a circulatsuccessively to the scrubbing, ina-shin g, and ing-pump; and I do not claim the use of the mixing action of the propeller, substantially propeller for moving the Ina-ss in a tank or tub as and for the purpose herein set forth.

from one part to the other. JOSEPH A. MILLER.

Having thus described my invention, what Witnesses: I claim is FRANoIs A. DANIELs,

The pipe B, connected with the bottom of a P. E. HAYES. 

